MultiTrode MultiSmart - Communications Redundancy Setup; Redundant IP Addresses Configuration; Redundant Phone Numbers Configuration

MultiSmart Installation & Operation Manual
22.2.7 Communications Redundancy
MultiSmart supports DNP communications over two physical channels, for a single slave instance. For
example, primary communications may be configured for radio using Serial 1 channel, whereas backup
communications may be configured for using PSTN.
In order to define redundant channels, first set up the primary channel using the Protocol Settings page.
Selection of the redundant channel can then be made from the Advanced screen. Navigate to:
When unsolicited responses are enabled, then only one of the channels will have control of unsolicited
responses at a time. On startup, the primary channel will assume responsibility. However, in the event of a
communications failure of the primary channel, the redundant channel will assume control of unsolicited
messages. This functionality can be modified from the Advanced screen. Navigate to:
If this parameter is set to false, then the redundant channel will not automatically assume control of
unsolicited responses in the event of a communications failure of the primary channel.
Unsolicited responses can also be controlled by the master station. If the master station sends a message on
the redundant channel, then that channel will automatically assume control of unsolicited responses. If the
master then sends a message on the primary channel, then control is switched back to the primary channel.
22.2.8 Redundant IP Addresses
There is an option in the MultiSmart to define redundant IP servers for DNP3 communications. When
communications with the primary master fails, the device attempts to establish communications to the
redundant master.
Redundant masters can be configured via the Advanced screen as described below.
Set Redundant Addresses to true in:
Then define the secondary IP address in:
Up to ten redundant IP addresses can be configured in this manner.
22.2.9 Redundant Phone Numbers
It is also possible to define redundant phone numbers for the PSTN channel. Unlike the TCP/IP redundancy
feature, there is no Redundant Addresses parameter to configure in this case. Instead, if multiple numbers of
defined, then it is assumed that redundancy is intended.
To define a secondary phone number, navigate to:
Up to ten redundant phone numbers can be configured in this manner.
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